Pulse Code Rhythm Studio 1.03, £0.69

Compatibility: iPhone, iPod touch, iPad (requires iOS 4.0 or later)

This self-contained electronic music production app has just been updated with (among other things), a 909-style drum machine (the DR-9) and Hornet, a subtractive ribbon synth. You can now use up to four devices in your song, too. At this sale price, you really can’t go wrong.

Xewton Music Studio 2.0, £10.49

Compatibility: iPhone, iPod touch, iPad (requires iOS 3.1 or later)

Music Studio was one of the first DAW-style apps to arrive on iOS and version 2 ups its game considerably. Audio tracks, mic recording, Audio Copy/Paste, new instruments and drum pads represent just some of the many improvements, making this a serious mobile production contender.

Algoriddim djay 1.4, £13.99

Compatibility: iPad (requires iOS 4.2 or later)

Optimised for iOS 5, djay now supports that OS’s enhanced AirPlay features and enables you to backup and sync song settings via iCloud. New FX, an FX pad, audio copy/paste and the option to sort your library by BPM are also among the new features.

DS Media Labs Mixr, £13.99

Compatibility: iPad (requires iOS 5.0 or later)

A brand-new contender in the iPad DJing market, Mixr has a familiar look to it and promises to let you “pitch, tap to tempo, scratch, multi-cue and mix with precision”. Tracks can be loaded via the Crate Manager, there are effects and your mixes can be recorded.